$1.$ Calculate your dependent variable column, for MSFT risk premium.

Then, use the LINEST$()$ array function to compute the regression model results and statistics, based on the specification earlier described for the F$-$F three factor model:

Ri $$ Rf $=$ b$0+$ b$1*($Rm $$ Rf$)+$ b$2*$SMB $+$ b$3*$HML $+$ error

Remember LINEST is an array function, so you want to use Ctl$-$Shift$-$Enter. Also make sure to enter $1$ for the third and fourth argument to the function, to enable the intercept coefficient, and to enable model diagnostic statistics calculation, respectively.

Just to make sure you know which coefficient is which, enter labels for the coefficients in the following section. Recall that as per the documentation, coefficients are ordered from right to left.